Physics · 9702 · Paper 2 variant 19702/21/M/J/24
Start0 of 51 marks·0 of 25 parts attempted — start anywhere
- 4(a)Define strain.1 mark
- 4(b)(i)Calculate the Young modulus of the wire.3 marks
- 4(b)(ii)On Fig. 4.1, draw a line to show how the stress varies with the strain for the wire up to its limit of proportionality.2 marks
- 4(c)By placing a tick (✓) in each row, complete Table 4.1 to compare the stress and strain of the two wires.2 marks
- 5(a)Explain how a stationary wave is formed between the vibration generator and the wall.2 marks
- 5(b)Calculate the wavelength of the stationary wave shown in Fig. 5.2.1 mark
- 5(c)On Fig. 5.3, sketch the shape of the stationary wave at time t = 0.24 s.2 marks
- 5(d)State the phase difference between the oscillations of points R and T.1 mark
- 5(e)Calculate the speed of the progressive waves on the stretched string.2 marks
- 7(a)State the nuclide notation in the form ᴬ_Z X for this nucleus of copper.1 mark
- 7(b)(i)Use Fig. 7.1 to explain why other particles apart from the β⁻ particles must be emitted during this decay.3 marks
- 7(b)(ii)State the name of the other particle emitted during the decay of this isotope.1 mark
- 7(b)(iii)Give the radioactive decay equation for this decay.3 marks